Circulating system for boilers.



J. B. SCOTT. GIRGULATING SYSTEM POR BOILERS.

APPLICATION FILED MAR. 29, 19143.

Patented Sept. 29, 1914.

2 SHEETS- SHEET 1.

` .i Snom/wo@ J. Scott 1 11 11 11 1 r. l l 1 .|1|1 11.. 1 I. .1.11111111. 1| I 111111111111111 1.51.. .1 1. 1 1 1 n 1 .1. L. ..withIlllllIlll\\llll|lIIl.llllilll\ll-llll\llll\ll\ll\llllllllll\ll|illlllllllllll\\ THE NORRIS PETERS CC.. FHQTULITHO. WSHINGTUN. D. C.

Lascaux CIRGULATING SYSTEM POR BOILERS. APPLICATION FILED MAR. 29, 1913.

1,1 1 1,766. Patented sept. 29, 1914.

, 2 SHBBTS-SHEET 2,

IE MORRIS PETERS CO.. PHOTOLITHOA. WASHING IDN. D. C.

UNITED: sTAfrEs PATENT 4oEEIoE.

.VrAMEs ELAKE soor'rfor CLEAREIELDQPENNSYLVANIA.

To all 'whom it may concern.' Y 1 Be it known.` that I, JAMES B; Soo'r'r, a citizen ofthe- United States, residing at Clearfield, in the countyl ofClearield and ing system therefor, and the primary object ofthe invention is: to provide an improved circulating system which will be a fuel economizer.l y1 u f y Y A further `object of `theinvention,resides in providing improved means, for; cfonducting the cool water at the forward end of the boiler :topoints in direct-contact with the `20` relbo'x and to; continue thefcirculation so mentioned. i v l Still another object` resides in the provision ofa ring or thelike disposed in the waterrleg of a boiler, to which are connected water conduits leading from the forward end .of the boiler proper.

A still further object" resides insey design-jl ing this ring as'tojforma substantial wall` in the length ofthewater leg, said ring being'notched on its inner peripheral edge to provide.' substantial circulating ports between said leg.

, A San further'fobjleetresidesin providing a device whichis simple and durable in con-V struction, inexpensive tov manufacture,` and one which .is very eiiicient and useful lin op@ eration.` s q g, yVAI/'ith these andother objectsin View, my invention consists in :the novel features of construction, combination, andl arrangement of parts, as will be hereinafter referred to and more particularly pointedl out in the specification Vand claims.; I

In the accompanying drawings `forming apartofthis app-licatiom'Figure lis avertical longitudinal `section throughwa` boiler, showing infull lines, `my. device applied to use therein, Fig. `2"isy a fragmentary vertical section through thef water leg and ring therein, Fig. 3 visjav fragmentary plan view ofthe rear 'end ofthe-boiler,- with my imlproved device appliedtouse,*Fig. 4 is a vertical transverse sectionfas seenon `line 4 4 of Fig. 1, and, Fig.";5.is 'a .fragmentary and i useful ring and thenwalls ofthe water` fully described hereinafter.

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Patented Sept. 29, 1914.

1 Application 1ed.1vrare1{2e,'1913. seiiaino. 757,630.

verticalsection through the Water leg of the boiler, showing a slightly Inodied form rof Vthe invention embodied therein.

In describing the invention I shall refer to the, drawings, in which similar reference characters designate like' partsy throughout the several views, and in which 1 designates the outer' shell or casing of a boiler ofthe `usual or any, preferred-type, Ihaving shown in the drawing, a boiler of the well known Vanderbilt type. end'of the boiler `is surrounded by the usual water. leg 3, and extending longitudinally through said boiler from the fire box to the `forward end thereof, yare the usual fire tubes 4f.; It is a wellv known fact that in boilers of this type, considerable difliculty has been experienced in the heating of the water at theforward end of the boiler; and causing a constant circulation thereof through said boiler, and my i invention contemplates a means for efficiently and readily accomplishing this result which will, at the same time, lessen the expenditure for fuel. To

this endI providefa, substantial annulus or iring member 5. whichis hollow in design and lits snuglybetween the walls of the water leg adjacent itsilower end. This annulus'or hollow ring member is secured 1n `position by means of boltsl 6 which extend completely through said ring member and The `fire box 2 at the rear are engagedl with the inner and outer walls v Iof said water leg, it being understood of course that the inner wall of the water leg forms the wall of the lire box. This substantial ring member `or. annulus 5 forms substantially a wall in `the length of the water leg, ,but the inner peripheral edge of the same between the bolts 6 is notched throughout,-.as shown at.7, to formfwhat may be Vtermed circulating ports, the purpose of .which will. be hereinafter and more particularly described.k In being notched, the i lring is provided with openings whereby the contents of thering will nd an exit to the waterleg and this construction will be more edge of the same, are a plurality of stand pipes 8 which extend parallel to the inner and `outer walls ofthe water leg, it being understood that the latter is disposed at an obtusel angle downwardly from the horizon- .tal plane of the boiler proper. These stand pipes alternatedwith-the boltsl in the fr'forward end of the ring member 5 and are` en-` gaged with additional Verticalpipe. sections 8, but if desired, these pipes 8 may be con-vk tinued upwardly and bent in substantialvertical position to extend upwardly intothe-V boilerproper, the former. being preferred, as the pipes 9 are arranged throughout the width of the boiler, the same, when extended up into the boiler proper, are of varied lengths, the same being so arranged Vas to form a substantial semi-circle, as clearlyf shown 1n Fig. 4 of the drawings, .and en-v gaged with theupper ends oft-hese vertical stand pipes 9 are `a'plurality of horizontal pipes or conduits 1'0 which extend longitudinally through the boiler and lterminate in' a plane-'adjacent the :forward end of said boiler. As shown,.thevinner or rear ends of' the longitudinal lpipes '10 are connected to the ends of `the `vertical stand pipes 9 -by means of elbows or unions, butif desired, the stand pipes may be formed from continuations of the longitudinal pipes, the former being preferred. Y

-In operation, it will be appreciated that the'water in the waiter leg surrounding-thev fire 'box2 will be the firstto becomevheated and-Aas the same `reaches a lpre-determined temperature, the same rises tothe surface of the water 'in Vthe boiler, portions Athereof beingliberated into lsteam andpassing to the steam dome. As the heated water in the water-leg 3 rises, a partial vacuum is formed below thering member 5, drawing the cooler water therein upwardly and, obviously, as this wateris drawn upwardly, a `suction will: be caused throughthe ring member, stand pipes and `longitudinal. pipes; As Ythis suc# tion occurs, the'cooler water atl-the forward endo'f-the boiler willibe conducted-'through the longitudinal or intakelpipes l0, down a constant circulation-of the water occurs.

The steam'l is therefore-more evenly formed than wouldy be true `under 'ordinary condi` tions and as the water throughout theboiler will beconstantly drawn in circulationand' heated, less fuel will be Vrequired `than isy necessary under Ipresent conditions.

In the drawings I have showna boiler "of the type well known as the Vanderbilt boiler, wherein the lower portion of thefire box is disposed in aplanebelow-the plane of the lower .portion of'thelboile'r proper, but Vit vwill be understood that -this system o-f 4circulation is equally well adapted for. use in connection .With'boilers'f other types,

Jbefreadily understood.' v

"While -I `have particularlydescribedv the ie'lements best-adaptedlto perform the funcwhereinrtheffirebox line with theboiler proper.

1 innig. 5 1 haveshown'a slightly modified form of invention, wherein a ring member or band .5. is-provided, the same being solid and secured snugly between the inner and outerwalls of the water leg by means of the bolts 6. This band orring member `5 forms asubstantial partition Wallin the lwalter leg of the boilerV and-in order to allow :a circulation of waterrbetween the inner `wall ofthe'waterleg andi'this band, or ring membeigthe notches 7"are .provided on the ,in-ner periphery of the same between the bolts 6 to provide circulating ports therein.

jThese ports are identical -to` the ports 7. in .the above referredfto form `and extending `through the forward. portion of the `ring to pointsv slightlylv belowf the same fare the ystand pipes "8', v'which `'lead vupwardly and for-v fwardly through fthe boiler (not shown). 'The construction of this formof thedevice is otherwise' the same as'thezform hereabove ldescribed and ifrom` the description given in `connection with the first mentioned form, fthe operation'ofthisformaof the device will tions set forth, lit fis obvious that :various changes in form, proportion, and` in` the :minor details of construction, may be re- :sortedto without departingfromthe spirit of o r sacrificing any of theprinciples of the invention. 1 f f Havingthus described my-invention, what I claimv is l x p 1. In =aiboiler,fthe 'combinationwith acasing having afirefboxtherein, a water `leg surrounding said fire box, gand l lire tubes eX` `tending from vsaidiire box to the `forward end of said casing ,f ofa'ring disposed in said lwater leg,saidl ring being provided with ports communicating `with the 'water leg,

and means to conductjwater from the forward end of saidi boilerjtolsaid/ring. 2. In-a"boiler,lthe combination witha casing having a fire box in therear end thereof,

a waterllegform'ed in 'the-casing surround! ing said fire box, and fire ftubesiexten'ding from said fire *'boxf'to fthe `,forward yend of said casing; o'f `a hollow ring disposed in said water legand having-'communication with the latter, andfafplurality ofl conduits extendingffrom a point adjacent lthe forward end ofsaidboiler andfhavingLcommunication with lthe forward ,end` of said ring.

'3, "In `-a boiler, the .combination `with a casing havingfafire Vbox formed inthe rear end 'thereof, La waterfleg fformed 'in the f casing; surroundingsaid` rebox, and re tubes extending fffrom -th'eflv're -box to the `vforward i end jofA the easing; of ahollow l`ring-member secured-= in said water leg adjacent "the lower end thereof, -saidfring iittingusnug'15T-"between' 4 the inner and outer walls of said water leg,

' cured in said water leg adjacent the lower end thereof to provide a substantial wall in the length of the same, the inner periphery of the ring member being notched vto provide ports between the portions of the leg above and below said ring member, said notches also providing means for communication between the interior of said ring member and said water leg, and conduits extending from points adjacent the forward end of the boiler and communication with the forward end of the ring member.k

5. In a boiler, the combination with a casing having a fire box formed in the rear end thereof, a water leg formed in the casing surrounding said re box, and fire tubes extending from said fire box to the forward end of the casing; of a hollow ring member secured in the water leg adjacent the lower end of the same to provide a substantial wall in the length thereof, the inner periphery of said ring member being notched to provide substantial ports between the portions of the leg above and below said ring member, said notched portions of the ring member also providing a means of communication between the interior of the ring member and said water leg, stand pipes mounted in the forward portion of the ring member, and intake pipes extending longitudinally of the boiler from a point adjacent the forward end thereof and connected to said stand pipes. j

6. In a boiler, the combination with a casing having a ire box therein, a water leg surrounding said fire box, and fire tubes extending from said fire box to the forward end of said casing; of va ring member disposed in the water leg and secured therein to form a substantial partition wall therein, the inner periphery of said ring being notched to provide circulating ports between the same and the inner wall of the water leg, and a plurality of conduits leading from the forward end of said ring to points adjacent the forward end of said boiler.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES BLAKE SCOTT.

Witnesses:

CHAS. D. FEIGHT, TV, Louis DnBAcK.

Copies of this patent may be obtained for five centsy each, by addressing the Commissioner of Patents,

Washington, D. C. 

